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FAQs Library
Q
UPS alarm Battery Expired -Set?
2026-06-12
A

1.Connect the device to the MTR software and change the battry maintenance reminder period for the UPS battery in Service Settings ->Battery Settings.
2. Users can use the V1.98C version of MTR software. In the controlCmd function (password: 12345678) ->Function key menu ->Reset battery history Data.
Note:UPS has the following alerts Bypass Fan Expired-Set,Dust Filter Expired-Set,Battery Expired -Set. This can be handled using this method.


Q
GD5000, remote/in-place, the logical sequence of starting/stopping VFD
2026-06-12
A

1. The local of GD5000 refers to the HMI control start, and the others are remote. 
2. GD5000 has a level 2 option to control remote in-place start ①Function code P0.01; ② Remote in-place knob of the man-machine interface of the control cabinet Local start logic: P0.01=1 (local command channel), the knob does not work Remote start logic: P0.01=remote communication command (terminal, communication, etc.), the knob is local=HMI start, the knob is remote=remote communication control 
3. The shutdown of VFD is not controlled by the communication instruction. For GD5000 in the operating state, any shutdown command sent by the instruction is accepted and executed.

Q
How to troubleshoot the GD5000 fan overheating alarm?
2026-06-12
A

 1. First of all, measure whether the voltage at the upper and lower ends of the circuit breaker and contactor is normal, and confirm whether there is a lack of phase, under voltage, or power loss phenomenon in the control power supply;
2. If the control electricity is normal, further check the control circuit, whether the terminals on the system IO board are loose, tighten the screws to ensure good contact;
3. Use a clamp meter to measure the running current of the fan. If the current is greater than the fan's rated current, it may be that the fan's phase sequence has changed, causing overload due to reverse operation. Replace the phase sequence.

Q
EC160A SMPS section components are getting burn
2026-06-05
A

On the control board, short link J3 & J4 and do not connect an external 24V supply to terminals CN4 (24+).

Q
What is the output frequency range of INVT GD5000 Version 07 MV VFD for 10 kV applications?
2026-06-05
A

The customer’s site has an input and output voltage of 10 kV and  frequency range of 0–300 Hz. We would like to know what the current operating frequency range is for our company’s Version 07 integrated high-voltage variable frequency drive.

A: The operating range of our company’s Version 07 high-voltage variable frequency drive currently spans 0–600 Hz, which fully meets the customer’s requirements.

Q
How to deal with the high temperature of the power unit / transformer in the HMI display?
2026-06-05
A

Whether the heat dissipation fan at the top of the cabinet is reversed, whether it is faulty, whether the inlet filter mesh is blocked, whether the ambient temperature is too high, regularly clean the inlet filter mesh of the unit cabinet and transformer cabinet, and keep the environment clean on-site. 2 The temperature sensor is faulty, check whether the circuit is broken or short-circuited, and whether the sensor is damaged.

Q
Er25-c Error on DA200A Drive When Issuing Stop Command
2026-05-29
A

The DA200A driver operates normally during startup. However, an Er25-c error occurs when the stop command is issued.

A: P0.76 is set to 0 to disable it. This is the case for all other models, including DA200A-E/C/N. The short circuit detection reporting mechanism has been optimized. Short circuit detection is now performed once per power-on or soft reset instead of every time the detection is enabled. The 1.05 version software has been optimized.

Q
How should parameter P02.17 be set on VFD?
2026-05-29
A

Parameter P02.17 is the number of pole pairs in the motor parameters. You first need to check the motor information to determine the number of magnetic poles on the motor rotor. However, the number of magnetic poles is not the same as the number of pole pairs. The number of pole pairs represents how many pairs of "N-S" poles there are. Therefore, the number of pole pairs equals the number of magnetic poles divided by 2.

Example: If the number of magnetic poles is 10, then the number of pole pairs is 5.

Q
Connecting External Power to Drive Output (U/V/W) in Standby?
2026-05-29
A

If power is supplied to the drive to put it in standby mode, and then an external power source is connected to its output terminals (U/V/W), what will happen?

A: This is a strictly prohibited operation. It will cause a serious fault and will immediately damage the drive. The most direct consequence is the burnout of the inverter module (IGBT) inside the drive and its driver circuit. Therefore, it is forbidden to connect any commercial power source (or any voltage source) directly to the U/V/W output terminals of the drive.

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